Vibratory drive apparatus



Aug. 17, 1943. T` M MQRGAN VIBRATORY DRIVE APPARATUS 2 Sheets-Sheet l Filed June 26, 194C INVENTOR ILHQMZQGM T. H. MORGAN V IBRATORY DRIVE APPARATU S 2 Sheets-Sheet 2 fforfzev.

Filed June 26, 1940 v 4 by the heads or end Plates 5 thereof.

Patented Aug. 17, 1943 UNITED STATES PATEN vinA'ronY DRIVE APPARATUS i Thomas Hubbard Morgan, signor to S. S. Bruce and Kittannng, Pa., as- H. C. Oliver, both of- Pittsburgh', ps ana T. Hubbard, Margen', Kiftanning, Pa.,r trustees Application June 26, 1940*,Seria'lv No. 342,498

3 claims. (ci. so-54.5)

Among the objects of the present invention are,

to provide an apparatus for the synchronous vibration of av pluralityof vibratory units; to provide apparatus wherein high frequency pneumatic vibrations are converted and distributed through hydraulic means to a multiplicity ofxvibratory units for-synchronous vibration thereof; and to provide for the application ofthe vibratory force equally to each of the plurality of vibratoryunits through positive action of the hydraulic distribution of said force.

My invention also contemplatesnmeans to provide against timeV lag in the hydraulic distribution of the vibratory force to the several vibratory' units; means to provide for starting themultiple system under load; and toV provide apparatus which is simple, economicala'ndhighly eicient.

Additional objects and advantages Will become apparent from the following descriptiontakenin connection with the accompanying drawings, wherein:

Fig. 1 is a diagrammatic view of an application of the vibratory drive embodying my invention;

Figs. 2 and 3 are diagrammatic viewsrillustratfing other devices equipped with a pluralityfof vibra-tory units for'vibration thereof by my invention; .l i n Fig. 4 'is a plan view of the master drive; and Fig. 5 is a side 'elevation thereof, partlyin section, Figs. 4 and 5 being connected diagrammatically by thesystem of piping or dfluid lines'employed, in order Vto facilitate illustrationof the iiuid circulation. y c

Referring toFigs. 4 and 5 ofthe drawings, a master vibratory drive unit is preferably mounted ina suitable frame orr support including a horizontal bed 2 shown in the form of a channel supported at its ends; by uprights 3. z Il` designates angle brackets slidably positioned lon the Web of l the channel bed 2 and being spaced apart to receive and support a master vibrator V therebetween, said vibrator being xed to the members Y by their respective conduits of said pistons, thus iiuid circuit for movement in either dire-:tionof The vibrator Vis preferably of the reciprocating piston type, as for example, the high frequency i pneumatic vibrator shownA in my `prior United States Patents Nos. 2,119,285 and 2,195,224.

Such

a vibrator readily lends itself to external connection with means tolbe vibrated as by connection with the piston or cylinder thereof,

Referring generally to the vibrator V, G designates the cylinder and? the piston therein, the latter having a piston rod 3 extending beyond one end ofthe cylinder through a packing gland Si. Air or other fluid under pressureis admitted to the cylinder 6 through a connection Iil for operating the vibrator. g V

ln theembodiment cf my invention as-il1us trated, the outer terminal end of pistonro'd 8 is secured centrally of and to a transverse horizontal drive bar Il.v In this embodimentg'l designates a plurality of hydraulic cylinders having pistons I3, the piston rods I thereof extending in parallel relation toward and being attached at I5 to the drive bar II.

The four hydraulic cylinders I2 illustrated, are inhorizontal series spaced Vin balancedl relation on either'side of the vibrator pistonqrod 8l for equal reciprocating movement of their pistons I3 by the movement of the rod 8. VEach of theV cylinders is anchored in Xed position to a transverse support I6, as particularly shown in Fig. 5, the support I6 being carried by the bed 2.

Each of the cylinders I2 connected in i'luid circuit with an individual prsing a cylinder I'Iand a piston I8, by suitable conduits in such a manner thatv pistons i3 and f I8 of their respective cylinders arefcontinnously in contact Wi'thpairs of fluid columns designated n I9 and iii) containing a suitable fiuid, as for example, a light turbine oil. i V

n i Cylinders I2 and Hare each {ported on 4either side of the normal range of pistontravel therein so that each fluid column I9 extends between an end of eachfpiston I3 andiiil, and each other fluid` column 29 extends between the ,other ends providing a complete series fluid and pistons. e l In other Words, the. fluid columns. Stand act-as connecting links between the Vpistons of respective pairsof cylinders I2 andV il?, whereby a movement imparted to Aone moves the other in either eating movement.

piston positively vibrator unit comdirection of recipro` As Shown in Fig. 1, pai-fs Of-cyiinaers i? are Y separator or other dev-icog cylinders il to another Fia lil-.1 8 may be absolutely egual in magnitude might otherwise be caused any suitable manner for vibration thereof by the series of units Il-l8.

Thus it will'be understood that upon opera-,tinsr the master vibrator V, its piston i' will vibrate the drive bar Il with a reciprocating movement, which vibrations are transmitted :to Afthe fluid columns I9 and 20 through hydraulic units IZ-l 3, the vibratory force of the vibrator V being distributed and imparted equeliv to the severa-l vibrator units are connected to one memo Since the pistons i8 unit and .ine

i, the applied vibreticns will .be direc-ily imported to the units io vibrate the seine in yopposite di ations.

.drive bar li is lar-ciers of suiiioient strength as .a beam to resist variations winch may occur due to load clifnscs et the veriousscparato vibrator units i conditions occur, such as the ,complete overloading of one unit nfld, the force ci' vibrator V Will nevertheless be applied to the fluid columns ,I9 and 20 to said unit, and since its load is -immovablathe drive bar will bend and indicate ,the necessity for shutting: down the apparatus 19o-remedy the diiculiy. In this connection, the drive bar H isv preierably .of lesser strength in bending than the piston rod .il to prevent injury to the latter.

' In order that the vibrations of theseveral units and operate svnclironism, it is important that the conduits or lines carrying the uuid oolunins ifi be substantially equal in length. and thatitne columns 2 0 should have substantially equal lengths, thereby eliminating any .time las ,in the hydraulic circuit to any one oi the' units HHS, which by unequal amounts of friction in unequal lines. Y

Figs. -2 and -3V illustrate the application ci my invention to the vibrating conveyance of material through the use of multiple vibrator units 1|8 connected and actuated as before by the master vibrator drive, By the spaced application of synchronous vibration to a plurality'A of 'POIltS along a conveyor surface, am able to place long sections of conveyor in synchronous `vibration for highly ellcient conveyance of materials such as grain, sand, ore and other substances of asimilar character.

In Fig. 2, 23'designatos a tubular conveyor suspended by springs diagrammatically indicated at 24, said conveyor having attachments 25 for securing the cylinders ll of the separate vibrator units, their pistons IB being secured to a heavy Weight or to a fixed member 26.

By driving Athe vibrators 11.-.fi8 by the master vibrator V, the conveyor tube 23 will vibrated throughout in synchronisrn, the pistons i being Stationary with the Weight or anchorage 2.6, and the cylinders il reciprocating to vibrate tho tope. Upon adjusting the units E'I-.el at a proper anglo, the vibrating conveyor will advance lmaby the members 22,

le'. ,should abnormal teral introduced thereto in a steady ready-flowing stream.

Fig. 3 illustrates a similar adaptation for the opposite but equal synchronous vibration of a, pair of conveyor tubes 23 and 23a, as will be readily understood, the l1 being secured by attachments 25a to the conveyor tube 23a, An important feature of my vinvention resides in the provision of means in connection with the master vibrator mounting to enable starting underload, as for example, when the separator 0r conveyor is loaded with material to be treated.

`in such an event, the inertia of the apparatus and load may 'be too great for starting with the cylinder 6 of `the vibrator V fixed.

I have therefore provided an adjustable moulltil'ig tor vthis Vibrator by permitting sliding of the mounting brackets 4 on the bed 2. The supporting lianges of the brackets are slotted at l2l to receive ,locking studs 28 having locking hand Wheels 2.9 forsecuring the vibrator V to the bed.

In addition, each bracket 4 is engaged by a spring 3D exerting a tension on the brackets in 4Opposite ...directions along a common line parallel to .the axis of the vibrator V, each Spring having an adjusting screw 3l for adjusting the spring tensions.

I n starting the master vibrator, the air or other fluid is admittedto the cylinder through connection L0, and locking means 28--29 areV loosened to permit reoiprocation of the vibrator cylinder relative to its piston through the slotted connections 2l with the bed 2,'Said movement of the cylinder 6 heini;r against the tension or the springs 351. Should the load be too great, the tension of the'springs may be relieved by screws 1 3! until thevibrator yis in motion..

.lvh h time the cylinder l(inlay be locked in lined Dosi on by the means 2 8-2B. This variation in y`',unpilifudc of movement yin the piston. rod is eoctod Without ,substantial change in frequency,

and upon locking the cylinder in place, the vibraliu-id.

tor piston .and rod vibrate the drive bar Il to motivate the multiplicity of vibratory units as described. i

IAs shown, my master drive structure includes vmeans -for charging and maintaining the hydraulic columns I9 and 20 from a `supply reservoir 32 containing a light turbine oil orother suitable 33 designates a pressure line for placing the oil or iluid in the reservoir 32 under `the pressure of the main air supply line 34, said line 33 havingY a control valve`3'5. A separate'line 36 feeds Ythe vibrator V through connection IU from the air supply 34, line 38 having a regulatling valve r2l by Whichthe vibrator operation may #the lines deninguid columns I9, whereby the columns I3 and 20 may be readily established from the pressure supply 32' and may be replen.

pistons i8 of the cylinders ished when necessary. 43A designates `check valves in each line 40 to permit iiow of hydraulic fluid from the reservoir 32 to the columns IS and 25, but preventing a reverse flow therefrom to the reservoir. Y

From the foregoing description it will be seen that I haveV provided a vibration system and apparatus wherein the master pneumatic operable vibrator imparts mechanical action which is positively and synchronously converted into hydraulic action for actuating a series of separate units or vibrators in the manner and vfor the purposes set forth. v

Various changes and modications are contemplated within the scope of the following v What I claim is:

l. A vibratory drive apparatus including a master vibrator, a plurality of hydraulic units simultaneously vibrated thereby, a plurality vof remote vibratory units including cylinder piston means, hydraulic conduits connecting each of the latter units with a hydraulic unit for synchronous vibration of said remote units by the master vibrator, said conduits containing columns of uid and having substantial equal Vlengths to equalize friction in said conduits and prevent time lag in any of said remote units.

2. A vibratory drive apparatus for the synchronous transmission of high `frequency vibrations including a master high frequency pneumatic vibrator having a cylinder and piston, a plurality of hydraulic units comprising xed cylinders and movable pistons, a drive bar connectthe master vibrator piston and all of the pistons of said units for simultaneously Vibrat- Vtons of said cylinders being of substantially equal l length.

3. A vibratory drive `apparatus for the synchronous transmissionof high frequency vibrations including a master high frequency pneumatic vibrator having a vcylinder and' piston, a plurality of hydraulic units comprising Xed cylinders and movable pistons, a drive bar connecting the master vibrator piston and all of the pistons of'said units for simultaneously vibrating the latter, a plurality of remote vibratory units corresponding in number with the hydraulic units and comprising pistons and cylinders, a pair of liquid conduits connecting the cylinder of each remote vibratory unit with the cylinder of a corresponding hydraulic unit, liquid columns in said conduits and cylinders, the liquid columns between the respective sides of the pistons of said cylinders being of substantially'equal length,

a source of liquid supply under pressure, supply conduits connecting one conduit of each of said pairs of conduits with said source, a ley-pass between each of said supply conduits and the other conduit of said pairs, and valves in the supply conduits on both sides of said lay-passes Whereby` to compensate for volume changes in said liquid conduits.

THOMAS HUBBARD ii/IORGAN. 

